Packing tin plates



Patented Get. 9, 1934* UNITED STATES.

PACKING TIN PLATES 7 Harold Septimus Giiford, Brooklanda, England,

assignor to Dunlop a British company Rubber Company, Limited,

No Drawing. Application September 8, 1932,

Serial No. 632,195. In GreatBi-itain November 10, 1931 a 3 Claims. (Cl. 91-68) This invention relates to improvements in the method for packing tin plates particularly for export.

In shipping tin plates difiiculties arise in ensur- 5 ing that they will arrive abroad free from corrosion.

The object of the present invention is so to treat tin plates, particularly for export, as to ensure their arrival abroad without being affected by w corrosion. 7

According to the present invention the method of packing tin platesparticularly' for export comprises treating each tinplate-individually. or preferably in bundles, with aqueous dispersions eithe kinds hereinafter specified.

The tin plates can be treated with the aforesaid aqueous diPrsions by any one or more ofthe known operations such as dipping, spreading or spraying.

Bundles of tin plates may for example comprise about 112 sheets bound tightly together. These bundles when dipped into the aforesaid aqueous dispersions and the dispersions allow to dry thereon have been found to resist deterioration 5 by corrosion during storage and transport. By tin plates is to be understood plates made of metal covered with tin, as for example, tinned -iron plates.

The dispersions ofn-ubber or the like comprise those consisting of or containing rubber, guttapercha, balata or similar vegetable resins occurring naturally or artificially obtained and in vulcanized or unvulcanized condition'. Such artificialaqueous dispersionsinay include those of 5 coagulated rubber, synthetic rubber, vulcanized rubber, waste or reclaimfi If desired, any of'the aforementioned dispersions maybe used alone or in admixture with one another.

,tained the nature 'of Any of the aforesaid dispersions may contain usual known compounding ingredients and/or may be in concentrated form.

Concentrates such as are obtained in U. S. Patent 1,846,164 February 23, 1932 in which may be an incorporated any one or more of the usual compounding ingredients may also be used.

Compositions as described and claimed in Patent 1,904,576 comprising rubber or similar vegetable resins in the form of aqueous emulsions or 5 dispersions thereof in admixture with an aqueous dispersion of wax or mixture of waxes wherein the wax content of the aforesaid compositionslies between the order of 20% and'95% on the dry rubber-wax content have been found suitable for use.

If desired the tin plates can be treated .with any one or more of the aforesaid aqueous dispersions of rubber or the like and this treatment followed by a subsequent treatment for example with a wax or mixture of waxes employed either in molten condition or as a solution, emulsion or suspension.

Having now particularly described and ascermy said invention and in what manner the same is to be performed, I declare that a What I claim is:

1. A tightly bound bundle of tin plates hermetically enclosed in a deposit of-dispersed materials comprising rubber. I

2. A tightly bound bundle of tin plates hermetically enclosed in a deposit of dispersed materials comprising rubber and wax. v

- 3. A tightly bound bundle of tin plates hermetically enclosedin a deposit comprising unmasticated rubber.

' HAROLD SEP'I'IMUS GIFFORD. 

